CN110767695B - Display device, display panel thereof and OLED array substrate - Google Patents

Display device, display panel thereof and OLED array substrate Download PDF

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Publication number
CN110767695B
CN110767695B CN201811627702.7A CN201811627702A CN110767695B CN 110767695 B CN110767695 B CN 110767695B CN 201811627702 A CN201811627702 A CN 201811627702A CN 110767695 B CN110767695 B CN 110767695B
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oled
pixels
row
display area
pixel
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CN110767695A (en
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楼均辉
胡凤章
张露
沈志华
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Yungu Guan Technology Co Ltd
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Yungu Guan Technology Co Ltd
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Priority to CN201811627702.7A priority Critical patent/CN110767695B/en
Priority to PCT/CN2019/092563 priority patent/WO2020133968A1/en
Publication of CN110767695A publication Critical patent/CN110767695A/en
Priority to US17/005,661 priority patent/US11380262B2/en
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    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G09G3/3258—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the voltage across the light-emitting element
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    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
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    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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    • G09G3/3275—Details of drivers for data electrodes
    • H—ELECTRICITY
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    • H10K50/80—Constructional details
    • H10K50/805—Electrodes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
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    • H10K59/12—Active-matrix OLED [AMOLED] displays
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Abstract

The invention provides a display device, a display panel thereof and an OLED array substrate, wherein the OLED array substrate comprises a display area, and the display area comprises a non-transparent display area and a transparent display area; the non-transparent display area comprises first OLED pixels which are arranged in an array mode, and the driving of each row of the first OLED pixels corresponds to part of the number of data signal channels of the display driving chip; the transparent display area comprises second OLED pixels of a row with a plurality of columns, a column with a plurality of rows or a column with a plurality of rows; when the second OLED pixel is driven, the transparent display area has a display function; when the second OLED pixel is not driven, the transparent display area has a light transmitting function; the driving of the second OLED pixel corresponds to the other part of the number of data signal channels of the same display driving chip; the data of all the data signal channels corresponding to the driving of the first OLED pixel and the second OLED pixel correspond to one frame of picture of the display panel. Has the advantages that: and the data signal channels in the display driving chip are correlated to realize consistent pictures and synchronous driving.

Description

Display device, display panel thereof and OLED array substrate
Technical Field
The invention relates to the technical field of OLED display equipment, in particular to a display device, a display panel and an OLED array substrate.
Background
Along with the rapid development of display devices, the requirement of users on screen occupation ratio is higher and higher, and elements such as a camera, a sensor and an earphone need to be installed above a screen, so that a part of area is reserved above the screen in the prior art for installing the elements, for example, the area of the front bang of iphoneX of an apple mobile phone, which affects the overall consistency of the screen, and the full-screen display is concerned more and more by the industry.
Disclosure of Invention
The invention aims to provide a display device suitable for a full-face screen, a display panel and an OLED array substrate of the display device, change the driving mode of a transparent display area, solve the problems of inconsistent and asynchronous display pictures and provide the full-face screen with higher quality.
To achieve the above object, a first aspect of the present invention provides an OLED array substrate, the display region including: a non-transparent display area and a transparent display area; the non-transparent display area comprises first OLED pixels which are arranged in an array mode, and the first OLED pixels comprise from bottom to top: the OLED device comprises a block-shaped first electrode, an OLED light-emitting structure and a second electrode; the driving of each column of first OLED pixels corresponds to part of the number of data signal channels of the display driving chip;
the transparent display area comprises a group of a plurality of columns of second OLED pixels, and the second OLED pixels comprise: the OLED display device comprises a first electrode extending along a column direction, an OLED light emitting structure located on the first electrode and extending along the column direction, and a second electrode located on the light emitting structure; when the group of second OLED pixels in each column are driven, the transparent display area has a display function; when the group of second OLED pixels in each row are not driven, the transparent display area has a light transmitting function; the driving of each row of the second OLED pixels corresponds to the data signal channels of the other part of the same display driving chip; and the second OLED pixels in each row and the data of all the data signal channels corresponding to the driving of the first OLED pixels in each row correspond to one frame of picture in the display area.
Optionally, the set of columns comprises one row of columns or two rows of columns; when the number of the rows and the columns is two, the colors of the second OLED pixels in two rows in one column are the same.
Optionally, the driving manner of the second OLED pixel is active, and the pixel driving circuit corresponding to the second OLED pixel is disposed in the non-transparent display area, the frame area, or the transition area between the transparent display area and the non-transparent display area.
Optionally, a group of all the second OLED pixels in the columns are same-color pixels, the driving mode of the same-color pixels in each column is passive, and the first electrodes of the same-color pixels in each row are connected to the same data signal channel or different data signal channels of the display driving chip;
or the group of second OLED pixels in each row are pixels with a plurality of colors, a plurality of adjacent pixels with different colors in one row form a pixel unit, the driving mode of the pixels in each row of each pixel unit is passive, and the first electrodes of the pixels with the same color in each row of each pixel unit are connected to the same data signal channel or different data signal channels of the display driving chip.
Optionally, the group of second OLED pixels in each column is pixels of multiple colors, each column of sub-pixels of different colors in one row forms a pixel unit, and a driving manner of each column of sub-pixels of each pixel unit is a passive type; the first electrode of each column of sub-pixels of each pixel unit in a row is connected with the drain electrode of a switching transistor, the source electrode of the switching transistor corresponding to each column of same-color sub-pixels of each pixel unit is connected with the same data signal channel of the display driving chip, and the grid electrode of the switching transistor is connected with the same or different switching signals.
Optionally, all the second OLED pixels in the rows are same-color pixels, the driving mode of each row of same-color pixels is active, the first electrode of each row of same-color pixels is connected to the drain of a driving transistor in a same pixel driving circuit, and the gate of the driving transistor corresponds to a same data signal channel of a display driving chip;
or the group of second OLED pixels in each column are pixels of multiple colors, each column of pixels of different colors in one row forms a pixel unit, the driving mode of each column of sub-pixels of each pixel unit is active, the first electrode of each column of same-color sub-pixels of each pixel unit in one row is connected to the drain electrode of the driving transistor in the same or different pixel driving circuit, and the gate electrode of each driving transistor corresponds to one data signal channel of the display driving chip.
Optionally, the pixel driving circuit corresponding to the group of second OLED pixels in each column has a function of compensating for a threshold voltage of the driving transistor.
Optionally, the switching signals in the pixel driving circuits corresponding to the second OLED pixels in each column of the group are derived from a partial number of scanning signal channels of the GIP circuit, and the switching signals in the pixel driving circuits corresponding to the first OLED pixels are derived from another partial number of scanning signal channels of the same GIP circuit.
Optionally, the second electrode of the second OLED pixel is a planar electrode, and/or the second electrode of each first OLED pixel is connected to the second electrode of each second OLED pixel to form a planar electrode.
Optionally, the projection of the first electrode of each column of the second OLED pixels on the plane of the OLED array substrate is composed of one first graphic unit or more than two first graphic units; the first graphic unit is round, oval, dumbbell-shaped, gourd-shaped or rectangular.
Optionally, when the group of columns is a row and columns, the first electrodes of the second OLED pixels in each column and the light emitting structures extend in an up-down direction in a section in the middle of the transparent display area, or extend from the top end of the transparent display area to the middle, the bottom end, or extend from the middle to the bottom end; when the group of the plurality of rows is two rows and a plurality of columns, the first electrodes of the second OLED pixels in the first row and the columns and the light-emitting structures extend in the upper and lower direction in a section of the middle upper part of the transparent display area, or extend downwards from the top end of the transparent display area to the middle upper part, the middle part or extend from the middle upper part to the middle part; the first electrodes of the second OLED pixels in each column of the second row and the light-emitting structure extend in the up-down direction in a section of the middle-lower part of the transparent display area, or extend from the bottom end of the transparent display area to the middle-lower part, the middle part or extend from the middle-lower part to the middle part.
Optionally, the OLED light emitting structure extends on the strip-shaped first electrode in a column direction, or a plurality of OLED light emitting structures are spaced on the strip-shaped first electrode.
A second aspect of the present invention provides a display panel including the OLED array substrate of any one of the above.
A third aspect of the present invention provides a display device including the display panel of any one of the above.
Optionally, a light sensor is correspondingly disposed in the transparent display area, and the light sensor includes: one or a combination of a camera, an iris recognition sensor and a fingerprint recognition sensor.
A fourth aspect of the present invention provides an OLED array substrate comprising a display area, the display area including: a non-transparent display area and a transparent display area; the non-transparent display area comprises first OLED pixels which are arranged in an array mode, and the first OLED pixels comprise from bottom to top: the OLED device comprises a block-shaped first electrode, an OLED light-emitting structure and a second electrode; the driving of each column of first OLED pixels corresponds to part of the number of data signal channels of the display driving chip;
the transparent display area comprises a group of rows of second OLED pixels, the second OLED pixels comprising: the OLED device comprises a first electrode extending along a row direction, an OLED light emitting structure located on the first electrode and extending along the row direction, and a second electrode located on the light emitting structure; when the group of second OLED pixels in each row are driven, the transparent display area has a display function; when the group of second OLED pixels in each row are not driven, the transparent display area has a light transmitting function; the driving of each row of the second OLED pixels corresponds to the data signal channels of the other part of the same display driving chip; and the data of all the data signal channels corresponding to the driving of the second OLED pixels and the first OLED pixels in each row corresponds to one frame of picture in the display area.
Optionally, the set of rows comprises one column of rows or two columns of rows.
Optionally, the driving manner of the second OLED pixel is active, and the pixel driving circuit corresponding to the second OLED pixel is disposed in the non-transparent display area, the frame area, or the transition area between the transparent display area and the non-transparent display area.
Optionally, the second OLED pixels in all rows of a group are same-color pixels, the driving manner of the pixels in all rows of the group is passive, and the first electrodes of the pixels in each row in one column are connected to the same data signal channel or different data signal channels of the display driving chip;
or the group of second OLED pixels in each row are pixels with a plurality of colors, a plurality of adjacent pixels in each row with different colors form a pixel unit, the driving mode of each sub-pixel in each row of each pixel unit is passive, and the first electrodes of each sub-pixel in each row and same color of each pixel unit in each row are connected to the same data signal channel or different data signal channels of the display driving chip.
Optionally, the second OLED pixels in each row of the group are pixels of multiple colors, each row of pixels of different colors in adjacent rows form a pixel unit, and the driving mode of each row of sub-pixels of each pixel unit is a passive mode; the first electrodes of the sub-pixels in each row of each pixel unit in a column are connected with the drain electrode of a switching transistor, the source electrodes of the switching transistors corresponding to the sub-pixels in each same color in each row of each pixel unit in the column are connected with the same data signal channel of the display driving chip, and the grid electrodes of the switching transistors are connected with the same or different switching signals.
Optionally, the second OLED pixels in all rows of a group are same-color pixels, the driving manner of the pixels in each row is active, the first electrodes of the pixels in all rows and in all columns are connected to the drain of a driving transistor in a same pixel driving circuit, and the gate of the driving transistor corresponds to a same data signal channel of a display driving chip;
or the group of second OLED pixels in each row are pixels of multiple colors, each row of pixels of different colors in one column forms a pixel unit, the driving mode of each row of sub-pixels of each pixel unit is active, the first electrodes of each row of sub-pixels of the same color of each column of pixel units are connected to the drain electrodes of the driving transistors in the same or different pixel driving circuits, and the gate electrode of each driving transistor corresponds to one data signal channel of the display driving chip.
Optionally, the pixel driving circuit corresponding to the second OLED pixel in each row of a column has a function of compensating for the threshold voltage of the driving transistor.
Optionally, the switching signal in the pixel driving circuit corresponding to the second OLED pixel in each row of a group is derived from one of the scanning signal channels of the GIP circuit, and the switching signal in the pixel driving circuit corresponding to the first OLED pixel is derived from another part of the number of scanning signal channels of the same GIP circuit.
Optionally, the second electrode of the second OLED pixel is a planar electrode, and/or the second electrode of each first OLED pixel is connected to the second electrode of each second OLED pixel to form a planar electrode.
Optionally, the projection of the first electrode of each row of second OLED pixels on the plane of the OLED array substrate is composed of one first graphic unit or more than two first graphic units; the first graphic unit is round, oval, dumbbell-shaped, gourd-shaped or rectangular.
Optionally, when the group of rows is a column and rows, the first electrodes of the second OLED pixels in each row and the light emitting structure extend in a left-right direction in a section in the middle of the transparent display area, or extend from the left end of the transparent display area to the right end of the transparent display area, or extend from the middle to the right end of the transparent display area; when a group of rows are two columns and a plurality of rows, the first electrodes of the second OLED pixels in the rows of the first column and the light-emitting structures extend in the left-right direction in a section of the left middle part of the transparent display area, or extend from the left end of the transparent display area to the left middle part or the middle part from the left middle part to the middle part; the first electrodes of the second OLED pixels in each row of the second column and the light-emitting structure extend in the left-right direction in a section of the right middle part of the transparent display area, or extend leftwards from the right end of the transparent display area to the right middle part, the middle part or extend from the right middle part to the middle part.
A fifth aspect of the present invention provides a display panel including the OLED array substrate of any one of the above.
A sixth aspect of the present invention provides a display device including the display panel of any one of the above.
Optionally, a light sensor is correspondingly disposed in the transparent display area, and the light sensor includes: one or a combination of a camera, an iris recognition sensor and a fingerprint recognition sensor.
Compared with the prior art, the invention has the beneficial effects that:
1) the reason why the display of the transparent display area and the non-transparent display area is not synchronous is analyzed by the inventor: the transparent display area and the non-transparent display area respectively adopt respective display drivers to provide switching signals and/or data signals, and the switching signals and/or the data signals are not related to each other.
Based on the analysis, the same display driving chip is adopted to drive the second OLED pixels of the transparent display area and the first OLED pixels of the non-transparent display area on the same display panel, that is, part of the number in the data signal channel in the display driving chip is provided for each column of the first OLED pixels, and the other part of the number is provided for each column of the second OLED pixels; the data of all the data signal channels corresponding to the driving of the first OLED pixel and the second OLED pixel correspond to one frame of picture of the display panel. Therefore, the data signal channels in the display driving chip are correlated, so that the picture consistency and the driving synchronization are realized.
2) In an alternative scheme, the first electrodes of the second OLED pixels of the transparent display area extend in the column direction, are arranged into a row with a plurality of columns, a row with a plurality of columns or extend in the row direction, and are arranged into a column with a plurality of rows, a column with a plurality of columns and a plurality of rows, the borders of the graphic film layers are reduced, the PPI is reduced, the parallel structure interval is properly increased, the diffraction problem during light transmission is improved, and therefore the imaging effect of the optical sensor under the transparent display area is good.
3) The second OLED pixels in the transparent display area are driven in a) active mode or b) passive mode. I.e. the transparent display area is AMOLED or PMOLED.
4) In an alternative, for the scheme a) in the alternatives 3), the pixel driving circuit corresponding to the second OLED pixel of the transparent display area is disposed in the non-transparent display area, the frame area, or a transition area between the transparent display area and the non-transparent display area. Compared with the scheme that the pixel driving circuit is arranged in the transparent display area, the scheme can further reduce the pattern film layer of the transparent display area and further reduce the diffraction problem in the light transmission mode.
5) In the alternative, c) the second OLED pixels of all columns in one row or all columns in two rows are same-color pixels; or d) each column of second OLED pixels is a plurality of color sub-pixels, and each column of sub-pixels with different colors in one row forms a pixel unit. e) The second OLED pixels of all rows in one row or all rows in two columns are same-color pixels; or f) each row of the second OLED pixels is a plurality of color sub-pixels, and each row of the sub-pixels with different colors in one column forms a pixel unit. For the schemes c) and e), when the transparent display region performs a display function, the region emits light in a single color, such as red light, blue light, green light, and the like. For the schemes d) and f), compared with the pixel units of the non-transparent display area, the display effect can be seen as the pixel units of a row with a plurality of columns, a column with a plurality of rows, and a column with a plurality of rows.
6) Alternatively, for the combination scheme of a) and c), the first electrodes of the pixels in the same color in each column in one row are connected to the drain electrode of a driving transistor in the same pixel driving circuit, and the gate electrode of the driving transistor corresponds to one data signal channel of the display driving chip. In other alternatives, in a row and columns of pixels of the same color, the first electrode of each pixel may be connected to the drain of a driving transistor in a pixel driving circuit, and the gate of each driving transistor corresponds to a data signal channel of the display driving chip. Compared with the latter scheme, the former pixel driving circuit has the advantages of small number of driving transistors and small occupied area; in addition, the requirement on the number of data signal channels is low, the number of connecting wires is also low, and the occupied area is small.
For the combination scheme of a) and d), the first electrodes of the same-color sub-pixels in each column of each pixel unit in one row are connected to the drains of the driving transistors in the same or different pixel driving circuits, and the gate of each driving transistor corresponds to one data signal channel of the display driving chip. Compared with the latter scheme, the former pixel driving circuit has the advantages of small number of driving transistors and small occupied area; in addition, the requirement on the number of data signal channels is low, the number of connecting wires is also low, and the occupied area is small.
For the combination scheme of b) and e), the first electrodes of all the pixels in the same color in a row are connected to the drain of the driving transistor in the same pixel driving circuit, and the gate of the driving transistor corresponds to the same data signal channel of the display driving chip. In other alternatives, the first electrodes of all the pixels in two columns and the same color in the row are connected to the drain electrodes of the driving transistors in the same pixel driving circuit, and the gate electrodes of the driving transistors correspond to the same data signal channel of the display driving chip.
For the combination scheme of b) and f), the first electrodes of the same-color sub-pixels in each row of each pixel unit are connected to the drains of the driving transistors in the same or different pixel driving circuits, and the gate of each driving transistor corresponds to one data signal channel of the display driving chip. In other alternatives, the first electrodes of the same-color sub-pixels in each row of two columns of pixel units may also be connected to the drain electrodes of the driving transistors in the same pixel driving circuit, and the gate electrode of each driving transistor corresponds to one data signal channel of the display driving chip.
With the combination scheme of b) and c), the first electrodes of the pixels of the same color in each column can be connected to the same data signal channel of the display driving chip. In other alternatives, the first electrode of each pixel in each column of same-color pixels may be connected to one data signal channel of the display driving chip. Compared with the latter scheme, the former scheme has less requirements on the number of data signal channels, less connecting and routing number and less occupied area.
For the combination scheme of b) and d), the first electrodes of the same-color sub-pixels in each column of each pixel unit are connected to the same data signal channel or different data signal channels of the display driving chip. Compared with the latter scheme, the former scheme has less requirements on the number of data signal channels, less connecting and routing number and less occupied area.
In this alternative, the first electrode of each column of sub-pixels of each pixel unit is connected to the drain of a switching transistor, the source of the switching transistor corresponding to each column of same-color sub-pixels of each pixel unit is connected to the same data signal channel of the display driving chip, and the gate is connected to the same or different switching signals. When the grid is connected with the same switch signal, the same-color sub-pixels can be controlled to be in a non-display state or not to be displayed, and the crosstalk is prevented when the adjacent other-color sub-pixels are displayed.
For the combination scheme of b) and e), the first electrodes of the pixels with the same color in each column are connected to the same data signal channel or different data signal channels of the display driving chip. In other alternatives, the first electrodes of the pixels with the same color in two columns and rows can be connected to the same data signal channel of the display driving chip.
For the combination scheme of b) and f), the first electrodes of the same-color sub-pixels in each row of the pixel units are connected to the same data signal channel or different data signal channels of the display driving chip. In other alternatives, the first electrodes of the same-color sub-pixels in each row of two columns of pixel units can be connected to the same data signal channel of the display driving chip.
7) In an alternative scheme, the pixel driving circuit corresponding to the second OLED pixel in each row or each column has a function of compensating for the threshold voltage of the driving transistor. The compensation can improve the service life of the display panel and the display uniformity.
8) In an alternative, the switching signals in the pixel driving circuits corresponding to the second OLED pixels in each column of one row are derived from part of the number of scanning signal channels in the GIP circuit (for a 2T1C pixel driving circuit, one scanning signal channel; two scan signal channels for a 7T1C pixel drive current), the switching signals in the pixel drive circuit corresponding to the first OLED pixel are derived from another partial number of scan signal channels of the same GIP circuit. The switching signals in the pixel driving circuits corresponding to the second OLED pixels in each row of a column are derived from part of the number of scan signal channels of the GIP circuit (one scan signal channel for a 2T1C pixel driving circuit; two scan signal channels for a 7T1C pixel driving circuit), and the switching signals in the pixel driving circuits corresponding to the first OLED pixels are derived from the other part of the number of scan signal channels of the same GIP circuit. The transparent display area and the non-transparent display area share the same GIP circuit, so that the display synchronization of the two areas can be improved more conveniently.
9) In an alternative, the projection of the first electrode of each row/column of the second OLED pixels on the plane of the OLED array substrate is composed of one first graphic unit or more than two first graphic units; the first graphic unit is round, oval, dumbbell-shaped, gourd-shaped or rectangular. The shape can superpose and cancel interference fringes, is favorable for reducing diffraction in a transparent display area light transmission mode, and improves imaging quality.
10) In an alternative scheme, when a group of the plurality of columns is a row and a plurality of columns, the first electrodes of the second OLED pixels in each column and the light-emitting structures extend in the up-down direction in a section in the middle of the transparent display area, or extend downwards from the top end of the transparent display area to the middle, the bottom end or extend from the middle to the bottom end; when the group of the plurality of rows is two rows and a plurality of columns, the first electrodes of the second OLED pixels in the first row and the columns and the light-emitting structures extend in the upper and lower direction in a section of the middle upper part of the transparent display area, or extend downwards from the top end of the transparent display area to the middle upper part, the middle part or extend from the middle upper part to the middle part; the first electrodes of the second OLED pixels in each column of the second row and the light-emitting structure extend in the up-down direction in a section of the middle-lower part of the transparent display area, or extend from the bottom end of the transparent display area to the middle-lower part, the middle part or extend from the middle-lower part to the middle part. When a group of rows are arranged in a row and a column, the first electrodes of the second OLED pixels in each row and the light-emitting structures extend in the left-right direction in a section in the middle of the transparent display area, or extend from the left end of the transparent display area to the middle part and the right end rightwards or extend from the middle part to the right end; when a group of rows are two columns and a plurality of rows, the first electrodes of the second OLED pixels in the rows of the first column and the light-emitting structures extend in the left-right direction in a section of the left middle part of the transparent display area, or extend from the left end of the transparent display area to the left middle part or the middle part from the left middle part to the middle part; the first electrodes of the second OLED pixels in each row of the second column and the light-emitting structure extend in the left-right direction in a section of the right middle part of the transparent display area, or extend leftwards from the right end of the transparent display area to the right middle part, the middle part or extend from the right middle part to the middle part. In this way, in addition to implementing different patterns by applying different magnitudes of driving currents to the first electrodes and/or applying driving currents to different color sub-pixels, the second OLED pixels of each column may be structurally formed into various patterns.
11) In an alternative scheme, each column/row of second OLED pixels of the transparent display area comprises a first electrode, an OLED light-emitting structure and a second electrode which are arranged from bottom to top, and the second electrodes of the second OLED pixels are connected into one electrode. Besides the first electrode, the OLED light-emitting structures are also arranged into a plurality of rows and columns, a plurality of rows in two rows and a plurality of columns in one row, and a plurality of rows in two columns and a plurality of rows in one column, and one OLED light-emitting structure corresponds to one first electrode, so that the junction of the graph film layers can be reduced, and the diffraction problem can be improved.
Drawings
FIG. 1 is a top view of an OLED array substrate in a first embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line AA in FIG. 1;
FIG. 3 is a schematic diagram of a passively driven circuit for each row of second OLED pixels in the transparent display area;
FIG. 4 is a schematic circuit diagram of another passively driven type of second OLED pixels in each column of the transparent display area;
FIG. 5 is a schematic diagram of an actively driven circuit for each row of second OLED pixels in the transparent display area;
FIG. 6 is a GIP circuit structure and timing diagram;
FIG. 7 is a schematic diagram of an alternative actively driven circuit for each column of second OLED pixels in the transparent display area;
fig. 8 is a circuit diagram and a timing chart of a pixel driving circuit having a function of compensating for a threshold voltage of a driving transistor;
FIG. 9 is a top view of an OLED array substrate in a second embodiment of the present invention;
FIG. 10 is a schematic diagram of a passively driven circuit for each row of second OLED subpixels in the transparent display area;
FIG. 11 is a schematic circuit diagram of another passively driven type of second OLED sub-pixels in each column of the transparent display area;
FIG. 12 is a schematic diagram of a passive driving circuit for each row of second OLED subpixels in the transparent display area;
FIG. 13 is a schematic diagram of an actively driven circuit for each row of second OLED subpixels in the transparent display area;
FIG. 14 is a top view of an OLED array substrate in a third embodiment of the present invention;
FIG. 15 is a top view of an OLED array substrate in a fourth embodiment of the present invention;
FIG. 16 is a top view of an OLED array substrate in a fifth embodiment of the present invention;
FIG. 17 is a schematic diagram of a passively driven circuit for two rows and columns of second OLED pixels in the transparent display area;
FIG. 18 is a schematic diagram of an alternative passively driven circuit for two rows and columns of second OLED pixels in the transparent display area;
FIG. 19 is a schematic diagram of an actively driven circuit for two rows and columns of second OLED pixels in the transparent display area;
FIG. 20 is a schematic diagram of an alternative actively driven circuit for two rows and columns of second OLED pixels in the transparent display area;
FIG. 21 is a top view of an OLED array substrate in a sixth embodiment of the present invention;
FIG. 22 is a schematic diagram of a passively driven circuit for two columns and rows of second OLED pixels in the transparent display area;
FIG. 23 is a schematic diagram of an actively driven circuit for two columns and two rows of second OLED pixels in the transparent display area;
FIG. 24 is a schematic diagram of a passively driven circuit for two columns and two rows of second OLED subpixels in the transparent display area;
FIG. 25 is a schematic diagram of an actively driven circuit for two columns and two rows of second OLED subpixels in the transparent display area;
fig. 26 is a top view of an OLED array substrate in a seventh embodiment of the invention.
To facilitate an understanding of the invention, all reference numerals appearing in the invention are listed below:
OLED array substrate 1, 2, 3, 4, 5, 6, 7 display area 10
Non-transparent display region 10a transparent display region 10b
First OLED pixel 11 display driving chip 12
Second OLED pixel 13, 13' first electrode 131
Stripe-shaped second electrode 132 OLED light emitting structure 133
Pixel definition layer 14 switching transistor X1
Drive transistor X2 storage capacitor C
First transistor T1 second transistor T2
Third transistor T3 fourth transistor T4
The fifth transistor T5 first clock signal line XCK
The second clock signal line CK and the first gate line Vgh
Second gate line Vgl
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
FIG. 1 is a top view of an OLED array substrate in a first embodiment of the present invention; fig. 2 is a sectional view taken along line AA in fig. 1.
Referring to fig. 1 and 2, the OLED array substrate 1 includes: a display area 10, the display area 10 including a non-transparent display area 10a and a transparent display area 10 b;
the non-transparent display area 10a includes first OLED pixels 11 arranged in an array, and the first OLED pixels include, from bottom to top: the OLED device comprises a block-shaped first electrode, an OLED light-emitting structure and a second electrode; the driving of each column of the first OLED pixels 11 corresponds to a partial number in the data signal channel of the display driving chip 12;
the transparent display area 10b comprises a row of several columns of second OLED pixels 13; the second OLED pixel 13 includes: the OLED display device comprises a first electrode extending along a column direction, an OLED light emitting structure located on the first electrode and extending along the column direction, and a second electrode located on the light emitting structure; when the second OLED pixels 13 in each column are driven, the transparent display region 10b has a display function; when the second OLED pixels 13 in each row are not driven, the transparent display region 10b has a light transmitting function; the driving of each column of the second OLED pixels 13 corresponds to another part of the number of data signal channels of the same display driving chip 12; the data of all data signal channels corresponding to the driving of each column of the first OLED pixel 11 and each column of the second OLED pixel 13 corresponds to one frame of the display area 10.
Referring to fig. 2, the second OLED pixel 13 includes, from bottom to top: a first electrode 131 extending in a column direction, an OLED light emitting structure 133, and a second electrode 132. The OLED light emitting structures 133 are separated by the pixel defining layer 14. In the first OLED pixel 11, the structure from bottom to top is the same as that of the second OLED pixel 13. In other alternatives, there may be no pixel defining layer between the OLED light emitting structures 133.
The second OLED pixel 13 differs from the first OLED pixel 11 in that: in each column of the second OLED pixels 13, the first electrode 131 and the OLED light emitting structure 133 extend from the top end to the bottom end of the transparent display region 10 b. The second electrodes 132 of each column of the second OLED pixels 13 may extend from the top end to the bottom end of the transparent display area 10b, or as shown in fig. 2, the second electrodes 132 of each column of the second OLED pixels 13 are connected to form a plane electrode.
In fig. 1 and fig. 2, all the second OLED pixels 13 in the transparent display area 10b are same color pixels. In the alternative, all the columns of second OLED pixels 13 of the transparent display area 10b may be red pixels, green pixels, blue pixels, yellow pixels, etc. In other words, when the transparent display region 10b performs a display function, the region emits light in a single color.
In other alternatives, the first electrode 131 and the OLED light emitting structure 113 in the second OLED pixel 13 may be arranged in an array form, which is identical to the first OLED pixel 11. It can be understood that, by arranging the first electrodes 131 and the OLED light emitting structures 113 in the second OLED pixels 13 of the transparent display area 10b in several rows extending from the top end to the bottom end, the boundaries of the pattern film layers can be reduced and the diffraction problem during light transmission can be improved compared to several rows and columns distributed in an array.
The light emitting driving method of the second OLED pixels 13 in each row of the transparent display area 10b may be active or passive.
Passive Matrix OLEDs (PMOLEDs), also called Passive OLEDs, are known in which pixels at row and column intersections in an array are illuminated by a scanning method by simply forming a Matrix of second and first electrodes, each pixel operating in a short pulse mode to emit light at an instantaneous high brightness. In other words, the addressing of each second OLED pixel 13 is directly controlled by the external circuitry. The external circuit may be controlled by a Display Driver Integrated Chip (DDIC).
Active Matrix OLEDs (AMOLEDs), also called Active drives, include an array of Thin Film Transistors (TFTs), each of which includes a storage capacitor. The AMOLED adopts independent thin film electric transistors to control each pixel to emit light, and each pixel can continuously emit light. In other words, the addressing of each second OLED pixel 13 is directly controlled by the thin film transistor array. The row selection signal of the thin film transistor array may be derived from the GIP circuit, and the column selection signal may be derived from a Display Driving Integrated Chip (DDIC).
FIG. 3 is a schematic diagram of a passively driven circuit for each column of second OLED pixels in the transparent display area. Referring to fig. 1 and 3, the first electrode of each column of the second OLED pixels 13 is connected to the same data signal channel of the display driving chip 12, and the second electrode is grounded. The data signal path carries color data corresponding to the color of the second OLED pixel 13 in each column. In other words, since there is only one row and one column, only the same driving current needs to be applied to each column, the driving current occupying one data signal channel (data line, source line) of the Display Driving Integrated Chip (DDIC). The remaining data channels of the display driving integrated chip may be provided to the first OLED pixels 11 of each column of the non-transparent display area 10a, i.e., each column of the first OLED pixels 11 occupies one data signal channel.
The sum of the plurality of data signal channels occupied by the non-transparent display area 10a and one data signal channel occupied by the transparent display area 10b, that is, the data of all the data signal channels corresponds to one frame of the display area 10. One frame of the picture corresponding to the display area 10 is: in an image refresh period, data of each data channel is processed from one image.
FIG. 4 is a schematic diagram of another passively driven circuit for the second OLED pixels in each column of the transparent display area. Referring to fig. 4, the first electrodes of the second OLED pixels 13 in each column are connected to different data signal channels of the display driving chip, and the second electrodes are grounded. Each data signal channel carries color data that corresponds to the color of the second OLED pixel 13 of the connected column. In other words, as there is only one row, only a drive current needs to be applied to each column, which occupies several data signal channels (source lines) of the Display Drive Integrated Chip (DDIC), i.e. one data signal channel per column of second OLED pixels 13. The remaining data channels of the display driving integrated chip may be provided to the first OLED pixels 11 of each column of the non-transparent display area 10a, i.e., each column of the first OLED pixels 11 occupies one data signal channel.
The data of the plurality of data signal channels occupied by the non-transparent display area 10a and the data of the total data signal channels of the plurality of data signal channels occupied by the transparent display area 10b correspond to one frame of picture of the display area 10.
In the embodiments shown in fig. 3 and fig. 4, the traces of the first electrodes of the second OLED pixels 13 in each row are disposed in the frame area of the OLED array substrate 1. In other alternatives, it is also possible to go on the non-transparent display area 10a or the transparent display area 10 b. It can be understood that, compared with the solution in which the trace is disposed in the transparent display area 10b, the solution disposed in the frame area and the non-transparent display area 10a can further reduce the pattern film layer of the transparent display area 10b, and further reduce the diffraction problem in the transparent mode.
It can be seen that the benefit of the embodiment of fig. 3 over the embodiment of fig. 4 is that: the former has less requirements on the number of data signal channels, less connecting wiring number and less occupied area.
FIG. 5 is a schematic diagram of an actively driven circuit of the second OLED pixels in each column of the transparent display area. Referring to fig. 5, the first electrode of each column of the second OLED pixels 13 is connected to the drain of the same driving transistor in the pixel driving circuit, and the second electrode is grounded; the grid electrode of the driving transistor corresponds to the same data signal channel of the display driving chip. In fig. 5, the pixel driving circuit includes a switching transistor X1, a driving transistor X2, and a storage capacitor C. The data line can be accessed to a data signal channel (source line) of a Display Driver Integrated Chip (DDIC); the scan lines may access one row of scan signal channels of the GIP circuit. The remaining data channels of the display driving integrated chip may be provided to the first OLED pixels 11 of each column of the non-transparent display area 10a, i.e., each column of the first OLED pixels 11 occupies one data signal channel. The remaining scan signal channels of the GIP circuit may be provided to each row of first OLED pixels 11 of the non-transparent display region 10a, i.e., each row of first OLED pixels 11 occupies one row of data signal channels.
The data of the data signal channels of the sum of the data signal channels occupied by the non-transparent display area 10a and the data signal channel occupied by the transparent display area 10b corresponds to one frame of the picture of the display area 10.
Fig. 6 is a GIP circuit structure and timing diagram. Referring to fig. 6, the GIP circuit includes a first transistor T1, a second transistor T2, a third transistor T3, a fourth transistor T4, and a fifth transistor T5. The first clock signal line XCK connects the gate of the first transistor T1 and the gate of the third transistor T3, and the second clock signal line CK connects the source of the second transistor T2. The first gate line Vgh connects the source of the fourth transistor T4 and the source of the fifth transistor T5, and the second gate line Vgl connects the sources of the third transistors T3. The OLED array substrate 1 may include a plurality of stages of GIP circuits, and a source of the first transistor T1 of the nth stage GIP circuit is connected to an input signal line Gn, which is an input signal of the nth stage circuit. The drain of the second transistor T2 of the nth stage GIP circuit is connected to the output signal line of the nth stage circuit, and the output signal of the nth stage GIP circuit serves as the input signal Gn +1 of the n +1 th stage GIP circuit.
Referring to the waveform diagram of the GIP circuit in fig. 6, the first gate line Vgh is at a high level, the second gate line Vgl is at a low level, and the first clock signal line XCK and the second clock signal line CK output digital signals with opposite high and low levels, respectively. When the first clock signal line XCK transitions to a low level, the 1 st-stage GIP circuit input signal line G1 receives a low level, and when the second clock signal line CK transitions to a low level, the 1 st-stage GIP circuit outputs a low level as the input signal G2 of the 2 nd-stage GIP circuit, and so on, and the output signal of the nth-stage circuit serves as the input signal of the (n + 1) th-stage circuit.
FIG. 7 is a schematic diagram of another actively driven circuit for each column of second OLED pixels in the transparent display area. Referring to fig. 7, the first electrode of each column of the second OLED pixels 13 is connected to the drain of a different driving transistor in the pixel driving circuit, and the second electrode is grounded; the grid electrode of each driving transistor corresponds to a data signal channel of the display driving chip. In fig. 7, the pixel driving circuit includes a transistor array, and each transistor unit includes: a switch transistor X1, a driving transistor X2 and a storage capacitor C. The data line in each transistor unit can be connected to a data signal channel (source line) of a Display Driving Integrated Chip (DDIC); each scan line of each transistor cell may access a row of scan signal channels of the GIP circuit. In other words, each transistor cell occupies a plurality of data signal channels of the display driving integrated chip, and occupies one row of scan signal channels of the GIP circuit. The remaining data channels of the display driving integrated chip may be provided to the first OLED pixels 11 of each column of the non-transparent display area 10a, i.e., each column of the first OLED pixels 11 occupies one data signal channel. The remaining scan signal channels of the GIP circuit may be provided to each row of first OLED pixels 11 of the non-transparent display region 10a, i.e., each row of first OLED pixels 11 occupies one row of data signal channels.
The data of the plurality of data signal channels occupied by the non-transparent display area 10a and the data of the total data signal channels of the plurality of data signal channels occupied by the transparent display area 10b correspond to one frame of picture of the display area 10.
Fig. 8 is a circuit diagram and a timing chart of a pixel driving circuit having a function of compensating for a threshold voltage of a driving transistor. In a specific implementation, the pixel driving circuit may be a pixel driving circuit that compensates for the threshold voltage of the driving transistor, such as 7T1C and 6T1C, as shown in fig. 8, in addition to the above-mentioned 2T 1C. The 7T1C pixel drive circuit shown in fig. 8 is divided into three phases of operation: resetting, compensating and emitting light. The working idea is as follows: the threshold voltage Vth of the driving transistor is firstly within the gate-source voltage Vgs in the compensation phase, Vgs-Vth is converted into current in the final light-emitting phase, and the influence of Vth is counteracted when the Vgs contains Vth, so that the current consistency is realized. The above circuit can improve the lifetime and display uniformity of the second OLED pixel 13.
For the case that the first electrode of each column of the second OLED pixels 13 is connected to the drain of the same driving transistor in the pixel driving circuit, the gate of the driving transistor corresponds to a data signal channel of the display driving chip, and the source corresponds to a power voltage: data line signal V of the pixel drive circuitDATAOne data signal channel (source line) that may originate from a Display Driver Integrated Chip (DDIC); signals of the scan lines Gn-1, Gn may be derived from two rows of scan signal channels of the GIP circuit, the emission signal EM may be derived from one row of emission signal channels of the GIP circuit, and the initial signal INIT may be derived from the display drive integrationAnd (3) a chip. The remaining data channels of the display driving integrated chip may be provided to the first OLED pixels 11 of each column of the non-transparent display area 10a, i.e., each column of the first OLED pixels 11 occupies one data signal channel. The remaining row scan signals of the GIP circuit can be provided to the first OLED pixels 11 in each row of the non-transparent display region 10a, that is, the first OLED pixels 11 in each row occupy two rows of scan signal channels, and the first OLED pixels 11 in two adjacent rows share one row of scan signal channels. The remaining row emission signals EM of the GIP circuit may be provided to the rows of first OLED pixels 11 of the non-transparent display region 10a, i.e., each row of first OLED pixels 11 occupies one row of emission signal EM channels.
For the case that the first electrode of each column of the second OLED pixels 13 is connected to the drain of a different driving transistor in the pixel driving circuit, the gate of each driving transistor corresponds to a data signal channel of the display driving chip, and the source of each driving transistor corresponds to the same or different power voltage: the data line signal V of the pixel driving circuit of the second OLED pixel 13 in each columnDATAOne data signal channel (source line) that may originate from a Display Driver Integrated Chip (DDIC); signals of the scan lines Gn-1, Gn may be derived from two rows of scan signal channels of the GIP circuit, the emission signal EM may be derived from one row of emission signal channels of the GIP circuit, and the initial signal INIT may be derived from the display driving integrated chip. Data line signal V of pixel driving circuit of a plurality of columns of second OLED pixels 13DATAA plurality of data signal channels (source lines) that may be sourced from a Display Driver Integrated Chip (DDIC); scanning line Gn-1、GnMay be derived from two rows of scan signal channels of the GIP circuit, and the emission signal EM may be derived from one row of emission signal channels of the GIP circuit.
The remaining data channels of the display driving integrated chip may be provided to the first OLED pixels 11 of each column of the non-transparent display area 10a, i.e., each column of the first OLED pixels 11 occupies one data signal channel. The remaining row scan signals of the GIP circuit can be provided to the first OLED pixels 11 in each row of the non-transparent display region 10a, that is, the first OLED pixels 11 in each row occupy two rows of scan signal channels, and the first OLED pixels 11 in two adjacent rows share one row of scan signal channels. The remaining row emission signals EM of the GIP circuit may be provided to the rows of first OLED pixels 11 of the non-transparent display region 10a, i.e., each row of first OLED pixels 11 occupies one row of emission signal EM channels.
In the embodiments shown in fig. 5 and fig. 7, the pixel driving circuits and the traces corresponding to the second OLED pixels 13 in each column are disposed in the frame area of the OLED array substrate 1. In other alternatives, it can be disposed in the non-transparent display area 10a or the transparent display area 10 b. It can be understood that, compared with the solution disposed in the transparent display area 10b, the solution disposed in the frame area and the non-transparent display area 10a can further reduce the pattern film layer of the transparent display area 10b, and further reduce the diffraction problem in the transparent mode.
It can be seen that the benefit of the embodiment of fig. 5 over the embodiment of fig. 7 is that: the former has less channel number requirement for data signal and scanning signal, less connecting wire number and less occupied area.
Fig. 9 is a top view of an OLED array substrate in a second embodiment of the present invention. The OLED array substrate 2 shown in fig. 9 is substantially the same as the OLED array substrate 1 shown in fig. 1, except that: each column of the second OLED pixels 13 is a plurality of color sub-pixels, and each column of the sub-pixels with different colors forms a pixel unit. In other words, a row of red sub-pixels, a row of green sub-pixels, and a row of blue sub-pixels are alternately arranged. In other alternatives, the sub-pixels in the pixel unit can be other colors besides red, green and blue.
Referring to the specific structure of the foregoing embodiment, the driving manner of the sub-pixels of multiple colors is different from the driving manner of the same color pixels of all the pixels.
FIG. 10 is a schematic diagram of a passively driven circuit for each row of second OLED subpixels in the transparent display area. Referring to fig. 10, the first electrodes of the same-color sub-pixels 13 in each column of the second OLED pixel units are connected to the same data signal channel of the display driving chip, and the second electrodes are grounded. In other words, the first electrodes of all the red sub-pixels in the column are connected to the same R data signal channel; the first electrodes of all the green sub-pixels in the rows are connected to the same G data signal channel; the first electrodes of all columns of blue sub-pixels are connected to the same B data signal channel. Since there are only one row and three columns, only the same drive current from three data signal channels (source lines) of a Display Driver Integrated Chip (DDIC) needs to be applied to the same color sub-pixels of each column. The remaining data channels of the display driving integrated chip may be provided to the first OLED pixels 11 of each column of the non-transparent display area 10a, i.e., each column of the first OLED pixels 11 occupies one data signal channel.
The data of the plurality of data signal channels occupied by the non-transparent display area 10a and the data of the total of the three data signal channels occupied by the transparent display area 10b correspond to one frame of picture of the display panel 1.
FIG. 11 is a schematic diagram of another passively driven circuit for the second OLED subpixels in each row of the transparent display area. Referring to fig. 11, the second electrode of each column of sub-pixels 13 of each pixel unit is grounded, the first electrode is connected to the drain of a switching transistor, the sources of the switching transistors corresponding to the same-color sub-pixels of each column of each pixel unit are connected to the same data signal channel of the display driving chip, and the gates are connected to the same switching signal. Besides, the display or non-display of all the same-color sub-pixels can be controlled uniformly, and when the switch signal is off, all the same-color sub-pixels can be controlled in a non-display state, so that the crosstalk can be prevented when the adjacent other-color sub-pixels are displayed.
In other alternatives, the first electrode of each column of sub-pixels of each pixel unit is connected with the drain electrode of a switching transistor, the source electrode of the switching transistor corresponding to each column of same-color sub-pixels of each pixel unit is connected with the same data signal channel of the display driving chip, and the grid electrode of the switching transistor is connected with different switching signals. The structure enables each column of same-color sub-pixels to be independently controlled to display or be transparent.
FIG. 12 is a schematic diagram of another passively driven circuit for each row of second OLED subpixels in the transparent display area. In order to make each column of same-color sub-pixels individually controllable in display or transparent, referring to fig. 12, the first electrodes of the sub-pixels 13 in each column of the second OLED pixel units may also be connected to different data signal channels of the display driving chip. With only one row, only the drive current needs to be applied to each column. The drive current for each column is sourced from a number of data signal channels (source lines) of a Display Driver Integrated Chip (DDIC). The remaining data channels of the display driving integrated chip may be provided to the first OLED pixels 11 of each column of the non-transparent display area 10a, i.e., each column of the first OLED pixels 11 occupies one data signal channel.
The data of the data signal channels corresponding to the first OLED pixels 11 in each column of the non-transparent display area 10a and the second OLED pixels 13 in each column of the transparent display area 10b correspond to one frame of the display panel 1.
FIG. 13 is a schematic diagram of an actively driven circuit of the second OLED subpixels in each row of the transparent display area. Referring to fig. 13, the second electrode of each column of the same-color sub-pixels 13 of each pixel unit is grounded, and the first electrode is connected to the drain of the same driving transistor in the pixel driving circuit; the grid electrode of the driving transistor corresponds to the same data signal channel of the display driving chip. In fig. 11, the pixel driving circuit may include a transistor array. Each transistor cell may include: a switch transistor X1, a driving transistor X2 and a storage capacitor C. The data line in each transistor unit can be connected to a data signal channel (source line) of a Display Driving Integrated Chip (DDIC); each scan line of each transistor cell may access a row of scan signal channels of the GIP circuit. In other words, three data signal channels occupying the display driving integrated chip and one row of scan signal channels occupying the GIP circuit. The remaining data channels of the display driving integrated chip may be provided to the first OLED pixels 11 of each column of the non-transparent display area 10a, i.e., each column of the first OLED pixels 11 occupies one data signal channel. The remaining row scan signals of the GIP circuit may be provided to the first OLED pixels 11 of each row of the non-transparent display region 10a, i.e., each row of the first OLED pixels 11 occupies one row of scan signal channels.
In other alternatives, the first electrode of the same-color sub-pixel 13 of each pixel unit is connected to the drain of a different driving transistor in the pixel driving circuit, and the gate of each driving transistor corresponds to a data signal channel of the display driving chip. The pixel driving circuit may include a transistor array. Each transistor cell may include: a switch transistor X1, a driving transistor X2 and a storage capacitor C. The data line in each transistor unit can be connected to a data signal channel (source line) of a Display Driving Integrated Chip (DDIC); each scan line of each transistor cell may access a row of scan signal channels of the GIP circuit. In other words, a plurality of data signal channels occupying the display driving integrated chip, and a row of scan signal channels occupying the GIP circuit.
The data of the data signal channels corresponding to the first OLED pixels 11 in each column of the non-transparent display area 10a and the second OLED pixels 13 in each column of the transparent display area 10b correspond to one frame of the display panel 1.
In a specific implementation, the pixel driving circuit connected to the first electrode of the same-color sub-pixel 13 of each pixel unit may be an existing pixel driving circuit such as 6T1C, 7T1C, or the like, in addition to the above-mentioned 2T 1C. Data line signal V of the pixel drive circuitDATAThree or more data signal channels that may be sourced by a Display Driver Integrated Chip (DDIC); scanning line Gn-1、GnThe signals of (a) may be derived from two rows of scan signal channels of the GIP circuit, the emission signal EM may be derived from one row of emission signal channels of the GIP circuit, and the initialization signal INIT may be derived from the display driving integrated chip.
Fig. 14 is a top view of an OLED array substrate in a third embodiment of the present invention. Referring to fig. 14, the OLED array substrate 3 in this embodiment is substantially the same as the OLED array substrates 1 and 2 in the previous embodiments, except that: a column of second OLED pixels 13' may extend in an up-down direction within a certain section of the middle of the transparent display area 10b, or extend from the top to the middle of the transparent display area 10b, or extend from the middle to the bottom. Has the advantages that: different from the previous solution, which only applies different driving currents to the first electrode and/or applies driving currents to different color sub-pixels to realize different patterns, the second OLED pixels 13' in each column can also form various patterns by combining structures.
Each column of the second OLED pixels 13' in the above arrangement may be monochrome pixels, i.e., the transparent display region 10 b; it is also possible to display in color for the sub-pixels of different colors, i.e., the transparent display area 10 b.
Fig. 15 is a top view of an OLED array substrate in a fourth embodiment of the present invention. Referring to fig. 15, the OLED array substrate 4 in this embodiment is substantially the same as the OLED array substrates 1, 2, 3 in the previous embodiments, except that: the second OLED pixels 13 "of a certain column, a certain number of columns or all columns are gourd-shaped in the up-down direction. In other words, the first electrode and the OLED light emitting structure of the second OLED pixel 13 ″ in a certain column, certain columns or all columns are gourd-shaped in the vertical direction. The structure can further reduce diffraction phenomenon in light transmission compared with a right-angle rectangle and a rounded rectangle.
Each column of the second OLED pixels 13 ″ in the above shape may be monochrome pixels, i.e., the transparent display region 10 b; it is also possible to display in color for the sub-pixels of different colors, i.e., the transparent display area 10 b.
Fig. 16 is a top view of an OLED array substrate in a fifth embodiment of the invention. Referring to fig. 16, the OLED array substrate 5 in this embodiment has substantially the same structure as the OLED array substrate 1 in the previous embodiment, except that: the second OLED pixels 13 are in two rows and several columns.
The structure of two rows and several columns of the second OLED pixels 13 can refer to the structure in the first to the fourth embodiments.
FIG. 17 is a schematic diagram of a passively driven circuit for two rows and columns of second OLED pixels in the transparent display area. Compared with fig. 3, it can be seen that the first electrodes of the second OLED pixels 13 in the first row and each column are connected to one data signal channel of the display driving chip 12, and the first electrodes of the second OLED pixels 13 in the second row and each column are connected to the other data signal channel of the display driving chip 12; the second electrodes of all the second OLED pixels 13 are connected to ground. In other alternatives, the first electrodes of the second OLED pixels 13 in two rows and columns are connected to one data signal channel of the display driving chip 12; in this scheme, the channel requirement for the display driver chip is minimal. The trace of the data signal channel corresponding to the second OLED pixel 13 in the first row may be disposed in the frame area. For the routing of the data signal channel corresponding to the second row of the second OLED pixels 13, the routing may be set in a transition region between the transparent display region and the non-transparent display region.
FIG. 18 is a schematic diagram of another passively driven circuit for two rows and columns of second OLED pixels in a transparent display area. Compared with fig. 4, it can be seen that the first electrode of the second OLED pixel 13 in each column of the first row is connected to one data signal channel of the display driving chip 12, and the first electrode of the second OLED pixel 13 in each column of the second row is also connected to one data signal channel of the display driving chip 12. In this scheme, the channel requirements for the display driver chip are the most.
FIG. 19 is a schematic diagram of an actively driven circuit for two rows and columns of second OLED pixels in the transparent display area. Compared with fig. 5, it can be seen that the first electrodes of the same-color pixels in each column of the first row are connected to the drain of a driving transistor in a pixel driving circuit, and the gate of the driving transistor corresponds to a data signal channel of the display driving chip; the first electrode of each column of same-color pixels in the second row is connected to the drain electrode of a driving transistor in another pixel driving circuit, and the grid electrode of the driving transistor corresponds to another data signal channel of the display driving chip. The same scanning signals are associated with the same color pixels in the first row and the same color pixels in the second row and the same color pixels in the columns. In other words, all the second OLED pixels of the transparent display area are turned on at one time.
The pixel driving circuit in fig. 19 is exemplified by 2T1C, but in other alternatives, specific pixel driving circuits such as 3T1C, 6T1C, 7T1C, and the like may be used.
FIG. 20 is a schematic diagram of an alternative actively driven circuit for two rows and columns of second OLED pixels in a transparent display area. Compared with fig. 6, it can be seen that the first electrode of each column of same-color pixels in the first row is connected to the drain of a driving transistor in a pixel driving circuit, and the gate of the driving transistor corresponds to a data signal channel of the display driving chip; the first electrode of each column of same-color pixels in the second row is also connected to the drain electrode of a driving transistor in a pixel driving circuit, and the grid electrode of the driving transistor corresponds to a data signal channel of a display driving chip.
The pixel driving circuit in fig. 20 is exemplified by 2T1C, but in other alternatives, specific pixel driving circuits such as 3T1C, 6T1C, 7T1C, and the like may be used.
Referring to the same color pixel driving manner of fig. 17 to 20, it can be seen that the driving of two rows of the second OLED pixels 13 in the present embodiment is equivalent to the driving of two rows of the second OLED pixels 13 in the previous embodiment. The difference lies in that: the upper and lower rows may share data signals when driven.
When two rows and a plurality of columns of second OLED pixels are pixels with multiple colors, the colors of the sub-pixels in the upper and lower rows in one column are preferably the same, and at this time, the two rows may respectively correspond to a data signal, or may share a column of data signals. In addition, the same scanning signals correspond to the same color pixels in the first row and the same color pixels in the second column. In other words, all the second OLED pixels 13 of the transparent display area are turned on at a time.
Fig. 21 is a top view of an OLED array substrate in a sixth embodiment of the invention. Referring to fig. 21, the OLED array substrate 6 in this embodiment includes a display area 10, and the display area 10 includes a non-transparent display area 10a and a transparent display area 10 b;
the non-transparent display area 10a includes first OLED pixels 11 arranged in an array, and the first OLED pixels include, from bottom to top: the OLED device comprises a block-shaped first electrode, an OLED light-emitting structure and a second electrode; the driving of each column of the first OLED pixels 11 corresponds to a partial number in the data signal channel of the display driving chip 12;
the transparent display area 10b includes two columns and several rows of second OLED pixels 13, and the second OLED pixels 13 include: the OLED device comprises a first electrode extending along a row direction, an OLED light emitting structure located on the first electrode and extending along the row direction, and a second electrode located on the light emitting structure; when the second OLED pixels in two columns and each row are driven, the transparent display area has a display function; when the second OLED pixels in the two columns and the rows are not driven, the transparent display area has a light transmission function; the driving of the second OLED pixels in each row of the two columns corresponds to the data signal channels with the number of the other parts of the same display driving chip; the data of all data signal channels corresponding to the driving of the first OLED pixel 11 in each row and the second OLED pixel 13 in each row in two columns corresponds to one frame of the display area 10.
Compared with the OLED array substrate 5 in the fifth embodiment, the differences are that: the second OLED pixels 13 are distributed in two columns and several rows.
The first electrode of each second OLED pixel 13 extends in the row direction.
FIG. 22 is a schematic diagram of a passively driven circuit for two columns and two rows of second OLED pixels in the transparent display area. Referring to fig. 22, the first electrodes of the pixels of the same color in each column are connected to the same data signal channel of the display driving chip. In other words, the transparent display area occupies two data signal channels.
The data of the plurality of data signal channels occupied by the non-transparent display area 10a and the sum of the two data signal channels occupied by the transparent display area 10b correspond to one frame of picture of the display area 10.
In other alternatives, the first electrodes of the pixels with the same color in each row are connected to different data signal channels of the display driving chip, or part of the first electrodes of the pixels with the same color in each row are connected to the same data signal channel; the first electrodes of the two columns of pixels with the same color in each row can be connected to the same data signal channel of the display driving chip.
FIG. 23 is a schematic diagram of an actively driven circuit for two columns and two rows of second OLED pixels in the transparent display area. Referring to fig. 23, the first electrodes of all the pixels in the same color in a row are connected to the drains of the driving transistors in the same pixel driving circuit, and the gates of the driving transistors correspond to the same data signal channel of the display driving chip. In other words, the transparent display area occupies two data signal channels.
In other alternatives, the first electrodes of the pixels in each row and each column of the same color are connected to the drain of a driving transistor in a pixel driving circuit, and the gate of the driving transistor corresponds to a data signal channel of a display driving chip; the first electrodes of all the pixels in the same color in two columns and rows can also be connected to the drain electrodes of the driving transistors in the same pixel driving circuit, and the grid electrodes of the driving transistors correspond to the same data signal channel of the display driving chip.
The pixel driving circuit in fig. 23 is exemplified by 2T1C, but in other alternatives, specific pixel driving circuits such as 3T1C, 6T1C, 7T1C, and the like may be used.
FIG. 24 is a schematic diagram of a passively driven circuit for two columns and two rows of second OLED subpixels in a transparent display area. Referring to fig. 24, the first electrodes of the same-color sub-pixels in each row of each pixel unit are connected to the same data signal channel of the display driving chip.
In other alternatives, the first electrode of each row of same-color sub-pixels of each column of pixel units is connected to one data signal channel of the display driving chip; the first electrodes of the same-color sub-pixels in each row of two columns of pixel units can be connected to the same data signal channel of the display driving chip.
FIG. 25 is a schematic diagram of an actively driven OLED subpixel in two columns and two rows of the transparent display area. Referring to fig. 25, the first electrodes of the same-color sub-pixels in each row of each pixel unit are connected to the drains of the driving transistors in the same pixel driving circuit, and the gate of each driving transistor corresponds to a data signal channel of the display driving chip. In other alternatives, the first electrodes of the same-color sub-pixels in each row of each pixel unit in a column are connected to the drains of the driving transistors in different pixel driving circuits, and the gate of each driving transistor corresponds to a data signal channel of the display driving chip; the first electrodes of the same-color sub-pixels in each row of the two columns of the pixel units can be connected to the drain electrodes of the driving transistors in the same pixel driving circuit, and the grid electrode of each driving transistor corresponds to one data signal channel of the display driving chip.
The pixel driving circuit in fig. 25 is exemplified by 2T1C, but in other alternatives, specific pixel driving circuits such as 3T1C, 6T1C, 7T1C, and the like may be used.
Fig. 26 is a top view of an OLED array substrate in a seventh embodiment of the invention. Referring to fig. 26, the OLED array substrate 7 in this embodiment omits the first or second column of second OLED pixels while extending the first or second column of second OLED pixels left and right, compared to the OLED array substrate 6 in fig. 21. Correspondingly, please refer to the structure of the second OLED pixel in fig. 21 for the structure of the second OLED pixel; the drive may be omitted from the left-hand set or the right-hand set in fig. 22 to 25.
Based on the OLED array substrate, the invention also provides a display panel provided with the packaging layer on the basis. The display panel may be provided with a touch layer as a touch panel in addition to the display device. The display panel can also be integrated with other components as a semi-finished product and assembled together to form a display device such as a mobile phone, a tablet computer, a vehicle-mounted display screen and the like.
In the display device, the light sensor is correspondingly arranged below the transparent display area 10b of the display panel, and the light sensor comprises: one or a combination of a camera, an iris recognition sensor and a fingerprint recognition sensor.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (26)

1. An OLED array substrate, comprising a display area, the display area comprising: a non-transparent display area and a transparent display area; the non-transparent display area comprises first OLED pixels which are arranged in an array mode, and the first OLED pixels comprise from bottom to top: the OLED device comprises a block-shaped first electrode, an OLED light-emitting structure and a second electrode; the driving of each column of first OLED pixels corresponds to part of the number of data signal channels of the display driving chip;
the transparent display area comprises a group of a plurality of columns of second OLED pixels, and the group of the plurality of columns comprises a row of a plurality of columns or a row of a plurality of columns; the second OLED pixel includes: the OLED display device comprises a first electrode extending along a column direction, an OLED light emitting structure located on the first electrode and extending along the column direction, and a second electrode located on the light emitting structure; the length of the first electrode of the second OLED pixel in the column direction is greater than the length of the first electrode of the first OLED pixel in the column direction; when the group of second OLED pixels in each column are driven, the transparent display area has a display function; when the group of second OLED pixels in each row are not driven, the transparent display area has a light transmitting function; the driving of each row of the second OLED pixels corresponds to the data signal channels of the other part of the same display driving chip; and the second OLED pixels in each row and the data of all the data signal channels corresponding to the driving of the first OLED pixels in each row correspond to one frame of picture in the display area.
2. The OLED array substrate of claim 1, wherein when there are two rows and several columns, the color of the second OLED pixels in two rows of one column is the same.
3. The OLED array substrate of claim 1, wherein the second OLED pixel is driven actively, and the pixel driving circuit corresponding to the second OLED pixel is disposed in a non-transparent display area, a frame area, or a transition area between the transparent display area and the non-transparent display area.
4. The OLED array substrate of claim 1, wherein a group of all the second OLED pixels in a row are same color pixels, the driving manner of the same color pixels in each row is passive, and the first electrodes of the same color pixels in each row are connected to the same data signal channel or different data signal channels of the display driving chip;
or the group of second OLED pixels in each row are pixels with a plurality of colors, a plurality of adjacent pixels with different colors in one row form a pixel unit, the driving mode of the pixels in each row of each pixel unit is passive, and the first electrodes of the pixels with the same color in each row of each pixel unit are connected to the same data signal channel or different data signal channels of the display driving chip.
5. The OLED array substrate of claim 1, wherein the group of second OLED pixels in each column is pixels of multiple colors, each column of sub-pixels of different colors in one row forms a pixel unit, and each column of sub-pixels of each pixel unit is driven in a passive mode; the first electrode of each column of sub-pixels of each pixel unit in a row is connected with the drain electrode of a switching transistor, the source electrode of the switching transistor corresponding to each column of same-color sub-pixels of each pixel unit is connected with the same data signal channel of the display driving chip, and the grid electrode of the switching transistor is connected with the same or different switching signals.
6. The OLED array substrate according to claim 1, wherein all the second OLED pixels in the columns are same-color pixels, the driving manner of the same-color pixels in each column is active, the first electrode of the same-color pixels in each column is connected to the drain of a driving transistor in a same pixel driving circuit, and the gate of the driving transistor corresponds to a same data signal channel of a display driving chip;
or the group of second OLED pixels in each column are pixels of multiple colors, each column of pixels of different colors in one row forms a pixel unit, the driving mode of each column of sub-pixels of each pixel unit is active, the first electrode of each column of same-color sub-pixels of each pixel unit in one row is connected to the drain electrode of the driving transistor in the same or different pixel driving circuit, and the gate electrode of each driving transistor corresponds to one data signal channel of the display driving chip.
7. The OLED array substrate of claim 6, wherein the pixel driving circuit corresponding to the second OLED pixel in each column has a function of compensating for a threshold voltage of the driving transistor.
8. The OLED array substrate of claim 6, wherein the switching signals in the pixel driving circuits corresponding to the second OLED pixels in each column of the group are derived from a partial number of the scanning signal channels of the GIP circuit, and the switching signals in the pixel driving circuits corresponding to the first OLED pixels are derived from another partial number of the scanning signal channels of the same GIP circuit.
9. The OLED array substrate of claim 1, wherein the second electrode of the second OLED pixel is a planar electrode, and/or the second electrode of each first OLED pixel is connected to the second electrode of each second OLED pixel to form a planar electrode.
10. The OLED array substrate of claim 1, wherein the projection of the first electrode of each column of the second OLED pixels on the plane of the OLED array substrate is composed of one first graphic unit or more than two first graphic units; the first graphic unit is round, oval, dumbbell-shaped, gourd-shaped or rectangular.
11. The OLED array substrate of claim 1, wherein when the plurality of columns is a row and a plurality of columns, the first electrode of the second OLED pixel and the light emitting structure of each column extend in an up-down direction in a section of the middle portion of the transparent display area, or extend from the top end of the transparent display area to the middle portion, the bottom end of the transparent display area, or extend from the middle portion to the bottom end of the transparent display area; when the group of the plurality of rows is two rows and a plurality of columns, the first electrodes of the second OLED pixels in the first row and the columns and the light-emitting structures extend in the upper and lower direction in a section of the middle upper part of the transparent display area, or extend downwards from the top end of the transparent display area to the middle upper part, the middle part or extend from the middle upper part to the middle part; the first electrodes of the second OLED pixels in each column of the second row and the light-emitting structure extend in the up-down direction in a section of the middle-lower part of the transparent display area, or extend from the bottom end of the transparent display area to the middle-lower part, the middle part or extend from the middle-lower part to the middle part.
12. The OLED array substrate of claim 1, wherein the OLED light emitting structures extend along the column direction on the strip-shaped first electrodes, or a plurality of OLED light emitting structures are spaced on the strip-shaped first electrodes.
13. A display panel comprising the OLED array substrate according to any one of claims 1 to 12.
14. A display device characterized by comprising the display panel according to claim 13.
15. An OLED array substrate comprising a display area, the display area comprising: a non-transparent display area and a transparent display area; the non-transparent display area comprises first OLED pixels which are arranged in an array mode, and the first OLED pixels comprise from bottom to top: the OLED device comprises a block-shaped first electrode, an OLED light-emitting structure and a second electrode; the driving of each column of first OLED pixels corresponds to part of the number of data signal channels of the display driving chip;
the transparent display area comprises a group of second OLED pixels with a plurality of rows, and the group of rows comprises a row of rows or a column of rows; the second OLED pixel includes: the OLED device comprises a first electrode extending along a row direction, an OLED light emitting structure located on the first electrode and extending along the row direction, and a second electrode located on the light emitting structure; the length of the first electrode of the second OLED pixel in the row direction is larger than that of the first electrode of the first OLED pixel in the row direction; when the group of second OLED pixels in each row are driven, the transparent display area has a display function; when the group of second OLED pixels in each row are not driven, the transparent display area has a light transmitting function; the driving of each row of the second OLED pixels corresponds to the data signal channels of the other part of the same display driving chip; and the data of all the data signal channels corresponding to the driving of the second OLED pixels and the first OLED pixels in each row corresponds to one frame of picture in the display area.
16. The OLED array substrate of claim 15, wherein the second OLED pixel is driven in an active mode, and the pixel driving circuit corresponding to the second OLED pixel is disposed in the non-transparent display area, the frame area, or a transition area between the transparent display area and the non-transparent display area.
17. The OLED array substrate of claim 15, wherein the second OLED pixels in all rows of a group are same-color pixels, the driving manner of the pixels in all rows of the group is passive, and the first electrodes of the pixels in all rows of a column are connected to a same data signal channel or different data signal channels of the display driving chip;
or the group of second OLED pixels in each row are pixels with a plurality of colors, a plurality of adjacent pixels in each row with different colors form a pixel unit, the driving mode of each sub-pixel in each row of each pixel unit is passive, and the first electrodes of each sub-pixel in each row and same color of each pixel unit in each row are connected to the same data signal channel or different data signal channels of the display driving chip.
18. The OLED array substrate of claim 15, wherein the second OLED pixels in each row of the group are pixels of multiple colors, each row of pixels of different colors in adjacent rows form a pixel unit, and each row of sub-pixels of each pixel unit is driven in a passive manner; the first electrodes of the sub-pixels in each row of each pixel unit in a column are connected with the drain electrode of a switching transistor, the source electrodes of the switching transistors corresponding to the sub-pixels in each same color in each row of each pixel unit in the column are connected with the same data signal channel of the display driving chip, and the grid electrodes of the switching transistors are connected with the same or different switching signals.
19. The OLED array substrate of claim 15, wherein the second OLED pixels in all rows of a group are same-color pixels, the driving manner of the pixels in each row is active, the first electrodes of the pixels in all rows and in all columns are connected to the drain of the driving transistor in the driving circuit of the same pixel, and the gate of the driving transistor corresponds to the same data signal channel of the display driving chip;
or the group of second OLED pixels in each row are pixels of multiple colors, each row of pixels of different colors in one column forms a pixel unit, the driving mode of each row of sub-pixels of each pixel unit is active, the first electrodes of each row of sub-pixels of the same color of each column of pixel units are connected to the drain electrodes of the driving transistors in the same or different pixel driving circuits, and the gate electrode of each driving transistor corresponds to one data signal channel of the display driving chip.
20. The OLED array substrate of claim 15, wherein the pixel driving circuit corresponding to each row of the second OLED pixels in a column has a function of compensating for a threshold voltage of the driving transistor.
21. The OLED array substrate of claim 15, wherein the switching signals in the pixel driving circuits corresponding to the second OLED pixels in each row of the group are derived from one of the scan signal channels of the GIP circuit, and the switching signals in the pixel driving circuits corresponding to the first OLED pixels are derived from another number of scan signal channels of the same GIP circuit.
22. The OLED array substrate of claim 15, wherein the second electrode of the second OLED pixel is a planar electrode, and/or the second electrode of each first OLED pixel is connected to the second electrode of each second OLED pixel to form a planar electrode.
23. The OLED array substrate of claim 15, wherein the projection of the first electrode of each row of the second OLED pixels on the plane of the OLED array substrate is composed of one first graphic unit or more than two first graphic units; the first graphic unit is round, oval, dumbbell-shaped, gourd-shaped or rectangular.
24. The OLED array substrate of claim 15, wherein when the plurality of rows is a set of rows and a column, the first electrodes of the second OLED pixels in each row and the light emitting structure extend in a left-right direction in a section of the middle portion of the transparent display area, or extend from the left end to the right end of the transparent display area, or extend from the middle portion to the right end; when a group of rows are two columns and a plurality of rows, the first electrodes of the second OLED pixels in the rows of the first column and the light-emitting structures extend in the left-right direction in a section of the left middle part of the transparent display area, or extend from the left end of the transparent display area to the left middle part or the middle part from the left middle part to the middle part; the first electrodes of the second OLED pixels in each row of the second column and the light-emitting structure extend in the left-right direction in a section of the right middle part of the transparent display area, or extend leftwards from the right end of the transparent display area to the right middle part, the middle part or extend from the right middle part to the middle part.
25. A display panel comprising the OLED array substrate of any one of claims 15 to 24.
26. A display device characterized by comprising the display panel according to claim 25.
CN201811627702.7A 2018-12-28 2018-12-28 Display device, display panel thereof and OLED array substrate Active CN110767695B (en)

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